Embattled National Security Agency (NSA) General Keith Alexander is expected to resign next year, ending his eight years in the top position.

According to U.S officials speaking anonymously, Alexander has formalised plans to leave early 2014. Reuters reports his civilian deputy John “Chris” Inglis is also expected to retire by the year’s end.

The chief’s departure means President Obama has a chance to install a new leader for the NSA. While a final decision has not been made, Vice Admiral Michael Rogers- the current commander of the US Navy's 10th Fleet and US Fleet Cyber Command- is tipped to become the successor. However, officials say there has been no final decision on selecting Rogers to succeed and other candidates may be considered.